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http://dx.doi.org/10.9726/kspse.2017.21.5.071

Simultaneous Measurement of Liquid-level, Concentration and Temperature of a Urea Tank using Ultrasonic and Electrical Conductivity Sensors  

Choi, Byungchul (School of Mechanical Engineering, Chonnam National University)
Kim, Taewook (Chonnam National University, graduate student of Depart. of Mechanical Engineering)
Publication Information
Journal of Power System Engineering / v.21, no.5, 2017 , pp. 71-78 More about this Journal
Abstract
The purpose of this study is to propose the basic data for the development of a sensor capable of simultaneously measuring the liquid-level, concentration and temperature of a urea tank using ultrasonic and electrical conductivity sensors for diesel vehicles with a urea-SCR system. It was found that the liquid-level of the urea tank using the ultrasonic sensor showed a good linearity with the actual liquid-level, and the urea concentration maintained good linearity in the range of 32.5 wt% to 10 wt%. It was an effective measurement of urea concentration to use the electrical conductivity sensor in the temperature range of $-10{\sim}22^{\circ}C$ and to use the ultrasonic sensor at $22^{\circ}C$ or more. Simultaneous measurement of concentration, liquid-level and temperature of the urea tank will be possible by attaching the electrical conductivity sensor and the ultrasonic sensor (split-type) to one sensor together.
Keywords
Urea-SCR; Liquid-level; Urea Concentration; Ultrasonic Sensor; Electrical Conductivity Sensor;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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